Is he claiming that his father is reupholstering his seats, or he yet again claiming that as another secret talent? Because, that would be his most ludicrous claim yet by far. Upholstery work is so fucking hard, requires so much specialized skill and years of practice to do well, and lots of expensive equipment as well.
If anyone wants to see how much fucking work upholstering a car seat with a basic 'tuck and roll' pattern is, here is a video:
The person in the video has worked in upholstery/seamstressy for decades, if you think they make it look easy.