"This many cars".
How many cars does he have? is correctHow many cars does he has? is incorrect
Yes, "He sells cars" is correct.
There are many car types and there is probably no correct answer since more and more cars types are being made each day.
Honda Motors sells cars. correct with a period at the end :)
The correct spelling for the person who repairs cars is mechanic.
Cars and More Cars has a lot of action and very little character development?
kuruma or more correct jidousha
Yes, that is the correct usage
Bronze
Many cars have a particular process that must be followed.Please make sure you find out the correct procedure for your car
new old stock
yes they do but there cars are more expensive (EDIT: "BUT THERE CARS ARE MORE EXPENSIVE" IS NOT CORRECT, THE TATA NANO IS THE CHEAPEST CAR IN THE WORLD, AND IT IS MADE IN INDIA)