Firstly, the Police do focus hugely on drug dealers and the use of drugs. They have a lot of squads to deal with said issues, they have squads that specialize in car theft also. I wouldn't say they focus on the road toll more than drug users. The police force is extremely political at times... some young people have died recently in some horrific crashes, so it's just a knee jerk reaction basically. And really... in the end, it's not that hard to get your car engineered or keep it legal.
# Don't have big f**k off wheels
# 10cm off the ground, is this really that hard? I hate my car lower than this height anyway
# POD in enclosed box
# bov plumbed back
Don't be a smartarse and you won't get done for shit like 'no H sticker' for the gear nob or seatbelt retracting slow etc haha.