Here is mine. The checkers are one-foot square for reference and the garage is about 42 feet wide. The video show how much room it gives, with both side being the same width. I can fit 4 cars on the ground with fairly reasonable room to open and close doors (with smaller cars like yours anyway). The lift adds a fifth spot and there is probably room by the cabinets to squeeze in a small 6th car in a pinch. I'd say you "could" get 5 of those cars side-by-side in a 50 foot wide garage. It wouldn't be roomy, but not terrible either.
Give thought to the doors too. You might just do 5 eight-foot wide doors if you go that route. Two standard 16ft doors would make getting 5 cars in and out more difficult. We did custom carriage doors on mine because I didn't want columns between each bay and didn't want roll-up doors that got in the way of the lift.
I have a friend who has an 80' x 20' garage with standard 9 foot ceiling, all sheet-rocked, no windows. It works for storage and posters, etc., but the long, low shape isn't that inspiring as a showroom. If you do long and shallow, consider an interesting and high ceiling (exposed timbers, etc.) to give it some sense of grandeur/interest.