Buy a Paris - Roubais style bicycle. Send it to a custom carbon shop to have rear eyelets added. Electronic shifting a must. Lots of carbon bits and pieces. particularly wheels. Consider tubulars, they ride so nicely. carbon shoes $400. The $700 1.5 lb tent. Custom Dyneema fabric bags. And of course a power meter to tell you your gain in efficiency.
I'll let you know when I win the lottery!

Look at all the ridiculous crap people waste money on. This would still be cheaper than many peoples second car. and a lot more fun.