So I've been using a mesh of UnclEvl's Alternative Car Wars one roll crash tables and a modified 3 phase speed chart down rev'ed from 5th ed... I also built a crash table 3 based on UnclEvl's charts for use in a game I ran for a local convention involving vehicles towing mini trailers with pintle mounts (I was going for oddball 😜)
http://unclevl.frothersunite.com/Car...WarsIndex.html
I was thinking of posting it up, but don't want to step on any toes, even though SJG has moved on to 6th ed, I've loved these guys for (literally) decades