Originally Posted by NikB316
The three main choices I have narrowed it down to are:
2014 F10 M5 LCI update which starts production in July.
2014 E63 AMG 4Matic which is supposed to come out in the summer.
2011-2012 Panamera Turbo.
The obvious missing choice is the Tesla Model S Performance. It has a longer range per (tank/charge), than any of the above cars. Given the above list I am guessing you will not be spending much time on the track so no loss there. AS an added bonus, you only see a few Teslas every day unlike the other cars which are dime a dozen.