Here's my list of things you can pick up:
Tiger Blood
Grenade
Booze
Pills
7 Gram Rocks
Cocaine
Crystal Meth
Acid
Mushrooms
Heroin
Pot
Money
Party food - drink
Party food - hamburger
Party food - brown cake
Party food - orange cake
Party food - pie
Party food - brownie
Party food - pizza
Thing is, I got the medal in a game where I hadn't yet gotten everything. So that means it would have to accept pickups spread over multiple games, but that makes even less sense. I must have picked one up without realizing it, while tripping on Tiger Blood or something.
Also, not only can you get the 100 cars medal from cars destroying themselves, you can get the 10 barricades medal that way too. The 10 barricades medal just sort of popped up on its own for me in my first game today, then in the second I got 100 cars. I played both at level 1 since my focus wasn't on points, but my second game I got over 10 million points. On level 1. It's a shame I've never done that well on level 4.
Anyway, another game down the hatch.