It would appear to be Car crash Cliches.
Myth : "A large truck driving at high speed can plow through two lanes of stopped cars and continue forward without stopping."
Status : "Busted"
Notes:
Adam and Jamie fitted "the Beast" (the dump truck they had previously used in "JATO 3" and "Crash Cushions") with a heavy reinforced bumper, then set up 10 cars in two parallel lines to simulate a traffic jam. When they drove the Beast into the cars at 40 miles per hour (64 km/h)., they were able to push through four car lengths before coming to a stop among the wreckage.
Declaring the myth busted, they decided to modify the Beast so that it could successfully plow through the traffic. They fabricated an attachment similar to a locomotive cowcatcher, in the hope that it would throw the cars aside and out of the Beast's way. For this test, they set up 16 cars instead of 10 and lubricated the attachment's surface with lard; driving at 40 miles per hour (64 km/h), they were able to push all the cars far to each side and continue rolling forward.
Source
YouTube Copy