Lamborghini Gallardo LP560 at £150,000 on the nose would be a definite choice. or the balbonie
if i split it over several cars then this would be a possible list:
Mitsubishi Lancer Evolution 6 Tommi Makinen Limited Edition = rally days
lotus 2-eleven or lotus exige cup 260 = track days
Nissan GTR = Day to day car
but i don't think i could choose just one, car for £150,000 the budget is too small; i love
Alfa romeo 8C competizione
koeinsegg's ccx
zenvo
oh god the list goes on,
it would take me months to whittle it down to a car to drive if i won the lottery. this list is just off the top of my head, i'm sure it would change