Buying a sports car as an investment

I have always wanted an Aston Martin and the V8 Vantage is affordable. I want the car to be an investment and to depreciate as little as possible. I have been offered an 18,000 mile 05 model for £43,000....

Aston Martin DB7 Vantage Auto

Is it better to keep this for years in wraps or sell it now? It has only done 27,000 miles and is in nearly mint condition.

I want a Toyota IQ - is it worth buying the 1.33 automatic?

I fancy a Toyota iQ - do you think it's worth going for the 1.33 automatic? Most of my driving is in town and I'm fed up of my big BMW 535D. Also, do you know if there will be any modifications to the...