Basically the less weight you have the faster you go
As the weight of a vehicle drops the mpg improves.
Heavy cars are not economical. Lightweight cars use less fuel to get them moving and keep them moving.
So that the cars not make enviroment worse
Most components of modern Formula One cars are made of carbon fiber. Carbon fiber is strong and ultra-lightweight.
Because it is cheap and lightweight.
Aluminum
Lotus cars are very good and are recognized most because of their lightweight design and easy maneuverability and downforce.
Everything in this world have to do with science.You just got to look at the scientific side of things.1st you have gasoline and you have air(oxygen). it is compressed inside the cylinder. and a spark ignites the fume mixture of the compressed mix of gasoline and air. which creates a chemical reaction creating carbon monoxide.
Well..old cars they were made out of metal
Many people drive hybrid cars, but they do have some disadvantages. The high price is one of the biggest hybrid car problems. In addition, the complicated system has to be repaired by experienced mechanics, which can be very costly. Generally, hybrids are smaller than most cars and made with lightweight materials. The lighter weight helps increase speed, but it can make hybrid cars more susceptible to being damaged in an accident.
you do not use materials while inventing. you use materials while buiding
Metal