How much would it weight if the chassis was built entirely out of a carbon-fiber?

i don't think u can build the chassis out of carbon fiber it's lightweight and strong but it can't support an engine, transmission and 2 people

The mclaren F1's chassis is a combination of carbon fiber and aluminum.

Body/frame - carbon fibre/carbon fibre-aluminium honeycomb monocoque
Let someone else answer how much it weighs

I was reading something a few weeks ago about a chassi for a ferrari or lambo or something being plastic or carbon fiber but it may be what quicksilver is talking about.