backseat -
a seat at the back of a vehicle (especially the seat at the back of an automobile)
seat any support where you can sit (especially the part of a chair or bench etc. on which you sit); "he dusted off the seat before sitting down"
auto,
automobile,
motorcar,
car,
machine a motor vehicle with four wheels; usually propelled by an internal combustion engine; "he needs a car to get to work"
backseat -
a secondary or inferior position or status; "tennis has had to take a backseat while his work is so demanding"