IN THE COURT OF APPEALS OF IOWA

No. 18-1244

Filed September 25, 2019

HOLGER ERNST HEINZ GOEBEL,

Plaintiff-Appellant,

vs.

GREEN LINE POLYMERS, INC.,

Defendant-Appellee.

________________________________________________________________

Appeal from the Iowa District Court for Black Hawk County, Bradley J. 

Harris, Judge.

Holger Goebel appeals the denial of his motion for a new trial. AFFIRMED. 

Joshua M. Moon, Matthew M. Craft, and Nathan J. Schroeder of Dutton, 

Braun, Staack & Hellman, P.L.C., Waterloo, for appellant.

J. Scott Bardole of Andersen & Associates, West Des Moines, for appellee.

Heard by Tabor, P.J., and Mullins and May, JJ.
2

MULLINS, Judge.

Holger Goebel appeals after the district court’s denial of his motion for a 

new trial following a civil jury verdict in favor of Green Line Polymers, Inc. (Green 

Line). He argues (1) the court abused its discretion in (a) allowing expert opinion 

testimony from a non-expert witness, (b) allowing said testimony despite its alleged 

irrelevance, and (c) allowing Goebel to be questioned concerning specific 

instances of conduct that had little to no bearing on his character for truthfulness; 

and (2) “a new trial should be granted where cumulative errors in the record 

reasonably support the request for a new trial” and “contributed to the jury’s verdict 

contrary to the great weight of the evidence.”1

I. Background Facts and Proceedings

Goebel has been a truck driver for roughly thirty years. He was born in 

Germany but moved to Canada when he was forty-three years old. In 2012, 

Goebel began his employment for a trucking business, Wildwood Transport 

(Wildwood), in Canada. On April 7, 2015, Goebel picked up a load of plastic pipes 

in Strathmore, Canada. The destination for the load was Green Line in Waterloo, 

Iowa. The pipes were stacked in five rows on Goebel’s trailer by individuals 

working at the location where Goebel picked up the load, using a forklift with a 

clamp. The first three rows individually consisted of two separate groupings of four 

twelve-inch-diameter pipes each, each grouping of four being bound together with 

metal bands. The fourth row consisted of six sixteen-inch-diameter pipes. The 

evidence is disputed as to whether the pipes in the fourth row were bound with 

 

1 We interpret this latter argument as a challenge to the sufficiency of the evidence 

supporting the jury’s verdict. Goebel agreed with our interpretation during oral arguments. 
3

metal bands, and this was a central factual issue at trial.2 The fifth row consisted 

of six sixteen-inch-diameter pipes. The evidence is undisputed that the pipes 

contained in this row were not bound together with metal bands. Goebel 

individually secured each of the rows to his trailer with fabric ratchet straps as they 

were loaded. 

Goebel departed from Strathmore at 6:00 p.m. He arrived at Green Line on 

April 10 at 8:15 a.m. After weighing in, he parked his truck where directed. The 

atmosphere at Green Line was noisy. After parking, Goebel got out of his truck 

and removed his fabric straps from the top row of pipes. Goebel then stood next 

to his truck. Green Line employees Corey Emery, James Holden, and Joshua 

Troupe3 comprised the crew that was involved in the unloading of Goebel’s trailer. 

Emery began unloading the pipes with a forklift with two prongs but no clamp. 

Emery removed the pipes in the fifth row and transported them to a nearby 

recycling machine without incident. Goebel then removed the fabric straps that 

were securing the fourth row of pipes. Goebel then positioned himself on the 

passenger side of his truck behind the rear axle and began rolling up his straps. 

According to his testimony, he then observed, “[o]ut of the corner of [his] eye,” the 

forklift was moving and “came out with the pipes” and a “pipe came off and caught” 

him on the neck. Goebel then fell backwards and the pipe fell on him. He 

sustained injuries. 

 

2 Goebel testified they were bound. A number of witnesses testified they were not, while 

others testified the metal bands on the subject row were broken. Photographs admitted 

as evidence that were taken shortly after the accident show the pipes contained in the 

fourth row were not secured together with metal bands. There is evidence upon which 

the jury could have concluded the pipes in the fourth row were not bound together with 

metal bands.

3 Holden and Troupe no longer worked for Green Line at the time of trial. 
4

In November 2016, Goebel filed a civil petition against Green Line alleging 

negligence. At trial, Holden testified the forklift was nowhere near Goebel’s trailer 

when the pipe fell from it. Instead, he testified the pipe fell from the trailer while 

Goebel was next to it collecting the straps he had just removed from the trailer. 

Troupe also testified4that Emery was backing the forklift out of the area where the 

recycling machine was located, which was roughly thirty yards away from Goebel’s 

truck, when he heard the pipe hit the ground. Emery likewise testified he was near 

the recycling machine, not Goebel’s trailer, when the pipe fell. One of Green Line’s 

experts, Dr. Todd Menna, who holds bachelor’s, master’s, and doctorate degrees 

in materials science and engineering, testified the pipe fell after the fabric straps 

were removed because of the way they were stacked and their return to their 

natural curvature after Goebel removed his fabric straps. Wildwood’s safety 

manager, Doug Bowes, testified5that, because the subject row of pipes was not 

bound together, Goebel should not have allowed them on his trailer and Goebel 

improperly loaded his trailer by allowing the pipes to be placed thereon. 

Bowes was deposed in February 2018. Thereafter, Goebel filed a motion 

for pretrial ruling on admissibility of evidence. Goebel requested that Bowes not 

be allowed to testify concerning Goebel’s disciplinary record as a driver, arguing 

such testimony would be irrelevant or prejudicial. He also requested that Bowes 

not be allowed to provide expert opinion testimony.6 Green Line responded that 

 

4 Troupe did not testify at trial. The testimony he gave in a prior deposition was provided 

to the jury. 

5 Bowes likewise did not testify at trial. His deposition testimony was read to the jury. 

6 Goebel had actually designated Bowes as an expert in his expert-witness list, noting that, 

based on his “background in the trucking industry and his experience as a risk manager 

for a trucking company, his testimony could be considered expert in nature.”
5

allowing Bowes to testify concerning Goebel’s disciplinary record would potentially 

be admissible for impeachment purposes and Bowes could properly provide expert 

testimony based on his knowledge and experience in the trucking industry. 

Following a hearing, the court ruled Goebel’s disciplinary record, namely that he 

had lied to his employer during a prior incident, “shall not be presented to the jury 

unless or until evidence has been received regarding the reputation of [Goebel] for 

truthfulness and the court has been alerted to the use of said evidence.” However, 

the court denied Goebel’s request that Bowes not be allowed to provide expert 

testimony, finding “an adequate foundation was laid during the deposition to 

establish . . . Bowes as an expert.” 

During cross-examination at the trial, Goebel was questioned whether any 

drivers working for his employer had ever been suspended for improperly securing 

a load. He responded in the negative. Defense counsel requested a conference 

outside the presence of the jury, during which he requested he be allowed to 

question Goebel regarding an incident in which he was, in fact, previously 

suspended for improperly securing a load. Goebel’s counsel objected on prejudice 

and improper-impeachment grounds. The court allowed the line of questioning for 

purposes of impeachment. 

The jury ultimately returned a verdict finding Green Line was not at fault. 

Goebel filed a motion for a new trial. In his supporting brief, Goebel argued a new 

trial was warranted under Iowa Rule of Civil Procedure 1.1004(6) because the 

verdict was “unsupported by the evidence.” He also argued Bowes was not 

qualified to provide expert testimony and his testimony was irrelevant to the issue 

of liability between the parties and prejudicial. Finally, Goebel challenged the 
6

court’s admission of matters included in his disciplinary and driving history. The 

court denied the motion and this appeal followed.

II. Analysis

A. Expert Testimony and Relevance

First, Goebel challenges the court’s decision to allow Bowes to provide 

expert testimony. “We review a trial court’s decision to admit or exclude expert 

testimony for an abuse of discretion” and “will reverse a decision by the district 

court concerning the admissibility of expert opinions only when the record shows 

‘the court exercised [its] discretion on grounds or for reasons clearly untenable or 

to an extent clearly unreasonable.’” Ranes v. Adams Labs., Inc., 778 N.W.2d 677, 

685 (Iowa 2010) (alteration in original) (quoting State v. Maghee, 573 N.W.2d 1, 5 

(Iowa 1997)). 

Iowa courts are “committed to a liberal view on the admissibility of expert 

testimony.” Id. Courts must consider two matters before admitting expert 

testimony: (1) “whether the expert’s proposed testimony will ‘assist the trier of fact’ 

in understanding ‘the evidence or to determine a fact in issue’” and (2) “whether 

the witness is qualified to testify as an expert ‘by knowledge, skill, experience, 

training, or education’ on the subject matter in question.” Quad City Bank & Tr. v. 

Jim Kircher & Assocs., P.C., 804 N.W.2d 83, 92 (Iowa 2011) (quoting Iowa R. Evid. 

5.702).

As to the first inquiry, Goebel argues Bowes’s testimony concerning 

whether Goebel’s trailer was improperly loaded for want of metal bands on the 

fourth row of pipes would not assist the jury in determining a fact in issue because 

that factual issue was irrelevant. For the challenge to relevancy, Goebel vaguely 
7

argues the testimony did not concern a fact in issue and did not “make the 

existence of any fact that [was] of consequence to the determination of the action 

more probable or less probable than it would be without the evidence.” 

“Evidence is relevant if” “[i]t has any tendency to make a fact more or less 

probable than it would be without the evidence; and” “[t]he fact is of consequence 

in determining the action.” Iowa R. Evid. 5.401. Whether the fourth row of pipes 

was bound and whether transporting pipes of this nature without the bands was an 

unsafe practice were highly relevant considerations for the jury’s determination of 

liability. We easily conclude Bowes’s testimony was helpful to the jury in both 

understanding the evidence and determining a fact in issue. See Iowa R. Evid. 

5.702.7

As to the second inquiry, Goebel largely argues that Bowes was not 

qualified to render expert opinion testimony. Goebel highlights the facts that 

Bowes does “not have any advanced degrees” or a “formal education beyond his 

GED.” However, the source of an expert’s knowledge is not significant. Olson v. 

Nieman’s, Ltd., 579 N.W.2d 299, 309 (Iowa 1998). While Bowes’s formal 

education is limited, he has extensive experience in the trucking industry. He 

obtained a Canadian equivalent to a commercial driver’s license in 1995 and drove 

for about three years thereafter. In or about 1999, he moved into an office setting, 

in which he variously worked as a dispatcher; fleet manager; load planner; 

 

7 Goebel asserted in oral argument that the testimony was irrelevant because it was 

unreliable, as Bowes did not testify his opinion was based on any regulation or standard 

practice. We conclude the alleged deficiency concerned the weight the evidence should 

receive as opposed to its admissibility. See, e.g., Warner v. Moore, No. 05-0403, 2006 

WL 334259, at *4 (Iowa Ct. App. Feb. 15, 2006) (noting complaints about the “imprecise 

nature” of expert opinion testimony “go to its weight, rather than its admissibility”). 
8

recruiter; and in human resources, customer service, and, perhaps most 

importantly, safety and compliance. Bowes started working for Wildwood in early 

2014 as its manager of safety and human capital. In this position, Bowes was 

responsible for safety and compliance, among other things. Bowes testified he is 

familiar with trucking-related regulations that require pipes of the sort in this case 

be banded together when placed on a trailer. 

Upon our review, we are unable to say the district court exercised its 

discretion on grounds or for reasons clearly untenable or to an extent clearly

unreasonable in concluding that Bowes’s experience in the trucking industry 

qualified him as an expert and allowing him to testify as such. See Ranes, 778 

N.W.2d at 685. We affirm the district court on this matter.8

B. Specific Instances of Conduct

Next, Goebel argues the district court abused its discretion in allowing the 

elicitation of testimony concerning Goebel’s prior suspension by his employer for 

improperly securing a load on his trailer. Goebel argues the testimony was 

irrelevant. Appellate review of the court’s decision to allow questioning for 

 

8 We find Goebel’s passive suggestion in his appellate brief that Bowes’s testimony should 

have been excluded on prejudice grounds insufficient to facilitate our review. See 

McCleeary v. Wirtz, 222 N.W.2d 409, 417 (Iowa 1974) (noting “random discussion” of an 

issue “will not be considered” on appeal). To the extent he sufficiently formulates the 

argument for the first time in his reply brief, we do not consider it. See Young v. Gregg, 

480 N.W.2d 75, 78 (Iowa 1992) (“[A]n issue cannot be asserted for the first time in a reply 

brief.”). We also do not consider the claim, made for the first time in his reply brief, that 

Bowes’s testimony improperly amounted to legal conclusions. See id. 

In any event, the probative value of Bowes’s testimony was not outweighed by the 

danger of unfair prejudice, and certainly not substantially so, see Iowa R. Evid. 5.403, and 

the testimony was proper opinion testimony. See Iowa R. Evid. 5.704; State v. Dinkins, 

553 N.W.2d 339, 341 (Iowa Ct. App. 1996) (noting expert opinions “may generally be 

expressed even though they embrace an ultimate issue to be decided by the trier of fact” 

(citation and internal quotation marks omitted)). 
9

impeachment purposes is for an abuse of discretion. See State v. Frazier, 559 

N.W.2d 34, 38 (Iowa Ct. App. 1996).

At trial, Goebel was questioned on cross-examination whether he was 

“aware of any Wildwood drivers who have ever been suspended or fired for 

improperly securing a load.” Goebel responded in the negative. Defense counsel 

requested a conference outside the presence of the jury, during which counsel 

requested to be allowed to question Goebel about his prior suspension for 

impeachment purposes. Over objection, the court allowed the line of questioning.

“[E]xtrinsic evidence is not admissible to prove specific instances of a 

witness’s conduct in order to attack or support the witness’s character for 

truthfulness. But the court may, on cross-examination, allow them to be inquired 

into if they are probative of the character for truthfulness or untruthfulness of” the 

witness. Iowa R. Evid. 5.608(b)(1). Goebel argues his prior suspension was not 

probative of his character for truthfulness or untruthfulness. 

“Cross-examination can be a powerful elixir for the truth, and our rules 

permit cross-examination as a means to both delve into the story told by the 

witness on direct examination . . . and to challenge credibility.” State v. Parker, 

747 N.W.2d 196, 207 (Iowa 2008). Here, we agree with Goebel that his prior 

suspension was not probative of his character for truthfulness or untruthfulness, at 

least initially. However, when Goebel testified he was unaware of any Wildwood 

drivers who have ever been suspended or fired for improperly securing a load, the 

specific instance of conduct (his prior suspension) clearly became probative of his 

character for truthfulness or untruthfulness, as he had just lied on the stand, while 

under oath. 
10

Upon our review, we are unable to say the district court exercised its 

discretion on grounds or for reasons clearly untenable or to an extent clearly 

unreasonable in allowing the complained-of line of questioning.9 See Frazier, 559 

N.W.2d at 38.

C. Sufficiency of the Evidence

Finally, Goebel argues “a new trial should be granted where cumulative 

errors in the record reasonably support the request for a new trial” and “contributed 

to the jury’s verdict contrary to the great weight of the evidence.” As noted, we 

interpret the argument to be a challenge to the sufficiency of the evidence 

supporting the jury’s verdict.10 See Iowa R. Civ. P. 1.1004(6).

Our review of sufficiency-of-the-evidence challenges is for legal error. See 

Estate of Hagedorn ex rel. Hagedorn v. Peterson, 690 N.W.2d 84, 87 (Iowa 2004). 

We will uphold the jury’s verdict if supported by substantial evidence. See Miller 

v. Rohling, 720 N.W.2d 562, 567 (Iowa 2006). “Evidence is substantial if 

reasonable minds could accept it as adequate to reach the same findings.” Tim 

O’Neill Chevrolet, Inc. v. Forristall, 551 N.W.2d 611, 614 (Iowa 1996). In 

determining whether the verdict is supported by substantial evidence, we view the 

evidence in the light most favorable to the verdict. See Miller, 720 N.W.2d at 567. 

Evidence is not rendered insubstantial merely because it might support a different 

 

9 Again, we do not consider Goebel’s passive assertion the line of questioning “resulted in 

exciting prejudice against” him, McCleeary, 222 N.W.2d at 417, or any formulation of the 

argument for the first time in his reply brief. Young, 480 N.W.2d at 78. In any event, while 

attacks to credibility on cross-examination are necessarily prejudicial to some extent, we 

conclude the probative value as to Goebel’s credibility was not substantially outweighed 

by the danger of unfair prejudice. See Iowa R. Evid. 5.403. 

10 The only errors cited in this portion of the brief are to the district court’s evidentiary 

rulings, which we have already addressed. Goebel goes on to argue he is entitled to a 

new trial because “the jury’s verdict [is] contrary to the great weight of the evidence.” 
11

conclusion; the only question is whether the evidence supports the finding actually 

made. See Brokaw v. Winfield-Mt. Union Cmty. Sch. Dist., 788 N.W.2d 386, 393 

(Iowa 2010). In considering a sufficiency-of-the-evidence challenge, “[i]t is not the 

province of the court . . . to resolve conflicts in the evidence, to pass upon the 

credibility of witnesses, to determine the plausibility of explanations, or to weigh 

the evidence; such matters are for the jury.” State v. Musser, 721 N.W.2d 758, 

761 (Iowa 2006) (quoting State v. Williams, 695 N.W.2d 23, 28 (Iowa 2005)). 

While many factual matters were disputed and the trial had its fair share of 

conflicting evidence, the totality of the evidence, when viewed in the light most 

favorable to the verdict, supports a conclusion that Green Line was not negligent. 

As such, we affirm the district court’s denial of Goebel’s motion for a new trial on 

sufficiency-of-the-evidence grounds.

III. Conclusion

We affirm the district court’s denial of Goebel’s motion for a new trial in its 

entirety. 

AFFIRMED.