Why not?

So, I've been driving my scion XB for a month now, and something occurred to me this morning on the way to work: These would be excellent rural mail delivery vehicles. Factor in the fuel mileage, the fact that they are already RHD in Japan, the legendary Toyota reliability, and why not?

Probably because of some policy dictating US manufactured cars only, that's why. Good thing ou can still get a RHD, no wait, you can't get any anymore, never mind. Wonder if those policies will change after Ford and GM go spiraling down the john?