Portable propane grills could be the right choice for you if you want a more compact grill that is easier to pack in the car, so you can take it on trips, camping, or going to the beach. The top pick for portable propane grills would be the Weber Q 320. It is a nice size compact grill that is still a top notch propane grill, which produces great grilled food. As well, it is not too puny like some portable grills and it is small enough to fit in the trunk.
There are many different sizes of propane grills and even portable grills come in smaller sizes than the Weber Q 320 — but it is the biggest portable type propane grill before going to small full-sized BBQ grills that are mounted on cabinets with casters.