How many cars does he have? is correct
How many cars does he has? is incorrect
No, it is not correct to say "I board a car." The phrase "board" is typically used for larger modes of transportation like planes, trains, or ships. For cars, you would say "I get in the car" or "I get into the car."
In most cases, it would be more correct to say that the cars are designed around existing axles, much like they are designed to use existing bearings. There are probably some vehicles for which axles are custom designed, though, and it would still be correct to say that a specific axle will only fit a specific car or cars.
kuruma or more correct jidousha
Yes, that is the correct usage
to say sell cars in spanish is to say, vender auto. Vender is selling can auto is car.
Depends if you are talking about both of their cars.. or just the car that they are in at the time..
We say Mother's and Father's cars are identical because the two possessions are considered separately. But we say Mother and Father's car ( or more likely Mom and Dad's car) because the couple is seen as a single possessor.
Cars are manufactured in a variety of shapes and sizes. However, it is safe to say that a car is typically 1 to 2 meters tall.
Yes
It would be impossible to say at a given time exactly how many cars are in Jay Leno's garage. He is a car 'collector' and has many high end vehicles. He owns more than 80 cars and about the same number of motorcycles.
Depending on what "it" is, "took it off the car" can be correct English usage.
Yes because there are multiple cars in the fleet. Ex) You wouldn't say a fleet of soldier . . . you would say a fleet of soldiers