Original sentence: Furthermore, the 158km represent the longest stretch of thousands of km of test runs, and the terrain was self-selected by the VaMP team, whereas the Grand Challenge course was unrehearsed and unknown to the teams.It should also be noted that the longest 158km VaMP run was on a Danish highway where everyone adheres to the 110km/h general speed limit and not passing is necessary.The DARPA cars drove on a variety of graded dirt roads, including narrow and steep mountain passes, VaMP drove on the mostly straight Autobahn.The DARPA cars were limited to top speeds of 80 km/h (50 mph), and the VaMP reached speeds up to 180 km/h (111 mph) in traffic, automatically passing slower vehicles (it should be noted that Stanley did pass H1ghlander in the 2005 DARPA Grand Challenge when H1ghlander was standing still
Edited sentence: The DARPA cars drove on a dirt road flattened by a steamroller, VaMP drove on the Autobahn.The DARPA cars were limited to top speeds of 80 km/h (50 mph), and the VaMP reached speeds up to 180 km/h (111 mph) in traffic, automatically passing slower vehicles (it should be noted that Stanley did pass H1ghlander in the 2005 DARPA Grand Challenge when H1ghlander was standing still)