50%/ 50% good deal?

[Jonny TVR]

Looking at the deal on a new Lotus Exige S and there is a deal for 50% deposit and remainder on interest free for 2 years. I plan to keep for 2 years so would sell. If I sold for £40K on a £60K spec car then it would have cost me £833 a month to run. I would expect to do 10K miles a year. Is the £40k residual after years realistic?