Question: How many model generations did the car Bill Elliott won the 1985 Daytona 500 in have?
Sentence (from "1985 Daytona 500"): After a mediocre run in the Busch Clash, Elliott nearly lapped the field in his 125-mile qualifying race, then thoroughly dominated the Daytona 500, leading 136 of the 200 laps in his #9 Coors/Melling Ford Thunderbird.
Relevant evidence: Yes