Ah pulp alley...
I have had one romp with the vehicle rules. 2 laps of a circle, 2 sedans with no vehicle mounted weapons.
What I noticed
Pedestrians who get hit by cars loose a wound/go squish -
very good 
Cars can go bump and push each other around - it's nice to survive a few scrapes before going boom.
Overtaking is a little hard, once infront you sort of stay there - but good for "chase" sequences, requiring some tricky driving from the rear car to overtake
Hand weapons are hard to target/dont do too much, but you can get lucky.
I didnt experiment with the brawling/hanging onto a car in a chase, but it looks very Mad Max esque.
I like you can customise your ride with armour/weapons as your league develops/progresses.
I certainly plan on playing with it a bit more. Especially as "one" ruleset covers skirmish action and vehicles.
I'd be interested in talking further/reading your bat reps.

Cheers
Matt