I'd buy a second hand car. Just sold (payment pending) my vw polo from 95 for 450. Had it for a year without any problems, payed 600 for it, so costed me 150 (+ insurance, tax etc of course). If you got some money to part with for a while, I think you'd have a hard time losing 500 on a car for say 1500, which would buy you a reliable Polo / micra etc that should easy hold up for a month
I'd buy a second hand car. Just sold (payment pending) my vw polo from 95 for 450. Had it for a year without any problems, payed 600 for it, so costed me 150 (+ insurance, tax etc of course). If you got some money to part with for a while, I think you'd have a hard time losing 500 on a car for say 1500, which would buy you a reliable Polo / micra etc that should easy hold up for a month