My thinking was that in 2027, the cars from 2017-2020 will have depreciated to an affordable amount, so that's what I'd be driving in a decade. So just pick your favourite new / upcoming car while taking into account how much it will cost in 10 years (a £2m+ Koenigsegg is still gonna me £2m+, but a £70k Audi is probably gonna be ~£10k).
Oh I get that but so many things going on in my life & future variables that I can't predict. Maybe I'll have a shed load of kids by then & need a mini van, who knows?!
I'd love an Audi R8, Nissan R35, Porsche 911 Turbo and lot's of other performance cars but who knows as my tastes may have changed a decade from now.