the state prosecutor usually drops the fluff charges, and goes after the most likely ones that will get convictions.
although, i have to say, cops do take your car if you use it to sell drugs. i know...i've purchased more than 1 drug seized car from a police auction. 1 still had drugs and paraphanalia littered in spots thru-out, even though it was searched via a warrant at the police station...an armed robbery search warrant doesn't include the meth or hash pipes, i assume.
Why not also make it a criminal offense to keep and use a car to pick up or sell drugs or how about keeping and using a pair of shoes to sell drugs? The reality is we are a nation clamoring for more and more laws