So now I need to buy yet another bike (good quality folding bikes aren't cheap), fold and unfold it at every stop, and drag it around in the store with me? And how am I supposed to carry a load of groceries on a little folding bike without a big basket or panniers? Come on, that's just not a realistic solution for any but the most dedicated cyclists.

I absolutely want to see more motorists switch to riding bikes. The only way to make that happen is though a combination of infrastructure improvements and effective law enforcement.