i can vouch for ex military car's, while doing my time of national service in the royal australian navy we had all the new model commodores, (and some toyota corola's) it was a race to see who could do the most amount of dammage in the shortes period of time, to this date, the record i set was 2 gearboxes, and 1 diff, all out of a toyota corola, didnt mannage to get the holden, was still trying till the day i left.