Voted for the blade as it's the least bad, but seriously - why not just buy a better/faster/flashier car instead? You obviously have too much money.
We always chuckle when we see pimped up shopping trolleys. For the full effect, put a massive row of logos on the doors - Ripspeed, Alpine, Tesco, Mothercare etc.
Planning on telling your insurance co you've done this? Good luck with paying out yourself for someone else's £x0,000 claim after your crash and your insurers tell you you're not covered (it does happen, I worked in the industry a few years back).