You win a gazillion dollars. What the first car u buy?

A Prius and then I would donate all the money to Al Gore so he could stop the polar bears from dying. 

screw that i'm getting an airship.

A spaceship to travel to my own planet.

The original Batmobile.

One with a chauffeur...!!

A car sculpted to look exactly like my penis

Just a really nice hatchback. I'm not really in to super cars. I'd probably get the Ford Focus ST.

I'd spend months just walking in to showrooms and test driving everything. I wouldn't just buy the most expensive.

I would be looking for a limo  that comes with a chauffeur.

Probably a convertible Porsche ... 911 Cabriolet Turbo S maybe. Only 165,000 euro. 

I'd need at least five of them so the paint colour could coordinate with my handbags.

A Renault Twizzy!  I have no use for one but every time I see one I grin from ear to ear.  They just look like so much fun for city driving, so I'd buy one and not feel guilty about it and probably pass it on a few weeks later, but you specifically asked about the first car, nit the Jag widowmaker I'd be looking out for.