help in How to create a passenger car

Does anyone know how to create a car that can be used by 2 players or 1 player and 1 entity? A passenger car (such as a taxi for example) I created a helicopter with an old method that I found here in the forum, and it worked for me, but now I would like to make a vehicle that allows to carry more than 1 person (one pilot and one passenger )
My English is very bad, sorry if something is not understood