I didn't realise that cars (other than black cabs) had to be 'designed' to be taxis, there aren't many cars on the road that last longer and are capable of doing more miles than a Honda (how many Hondas do you see in a scrapyard?), so why not use the jazz as a Taxi - it has a decent amount of passenger space and a reasonably large boot.
It's all in the way you drive, and no-one says that all taxis have to be driven like F1 cars, by maniacs who have scant regard for other road users.
Good on you narcis, hope you do well with your TaxiJazz.