If you don't actually sell someone something illegal, but take them to buy illegal things using the safety of your car so they avoid detection - are you innocen

If you don't actually sell someone something illegal, but take them to buy illegal things using the safety of your car so they avoid detection - are you innocent? Drinking and driving exists and is illegal, but going to the grocery store isn't. Should we do an all or nothing sort of ban, either allowing drunk driving or banning cars altogether? No one would do this - some uses are illegal, most aren't. A law that allows legal uses of your car but disallows illegal activity isn't all that unheard of.