Hiroshima! hah, i was born there.
it'll be a b!tch driving around a big car like an R34 in japan, that's why i hardly saw any Soarers or Supras there. Just too inconvenient to get around.
Hiroshima - depending on where u live, u probably wont need a car, there are quite a few buses around, if u can catch the Astramline (the monorail) then that's a bonus, they come every 10 mins off-peak and around 3 mins peak time (ie 6-8am, 5-7pm...)
be prepared to pay a bit on getting around though, it can get quite expensive...