There are different solutions to transport a person sitting in the wheelchair with a car.
Following you will find examples of car modifications the can be rebuild without problems. That mens that you have not build a special vehicle.
The wheelchair loading system DRIVE INBOY is very suitable for vehicles / MiniVANs that have a high trunks. The safety zone between the top of the passengers head in the wheelchair and the car´s top should be 10 cm minimum. A specific belt-system secures the person and the wheelchair in the vehicle.
The lifting system DRIVE INBOY can be installed in some cars sideways which have accordingly large sliding doors.
Video on youtube.
The wheelchair-ramp is distinguished especially by its easy handling. It is easy to use by just one person.
By using a gas pressur buffer the effort is low while opening and closing the hatch.