every one tells me there is no capital gains tax on a car . but a copper who lives across the road seems to think if you make over £6000 you are liable for it. is this true ? me and my brother bought the car 6 yrs ago I put my supersport down on it. value £20,000 and my brother wrote a cheque for £50,000 total £70,000 .sold it for £140,000 .where do I stand ?