I'm lucky enough to have driven a variety of super/hyper cars as part of my job (chassis engineer for a major supplier). The mp4-12c has to be one of my favourites as it's very easy to live with. Compact, easy to see out of, manoeuvre etc compared to other super cars. Power delivery is something else due to the turbo set up, the sensation of the acceleration increasing not dropping off at high speeds is unlike the na super cars. Love the red stitching /font being the same as the f1 too. Nice touch. That said it's not much of an event, it's a compact supercar that's quite practical, upto you if it sets the pulses racing.
The p1 on the other hand is insane. Completely insane. I've driven plenty of 600+hp cars (and spent a lot of time in a veyron ss) but the p1 left me in shock. It's hard to relate to the performance. Drivetrain is neat too, love the way the transition from electric to ic power is seamless at city speeds. You pour fuel all over the roof when you fill it up though!