BTCC cars are penneth, very good value if you can support them. Sold 2 Lagunas last year, an Eastern European came and just took them, cash money lol.
I don't really see the point in buying that F1 car, you can buy cheaper display ones and that will take a lot of work to get going... for a race car with no pedigree or orginality.
Genuine F1 cars can be bought for the cost of a supercar anyway, not bad value IMO! Shame you need a dedicated team to look after them.