This episode of Motorvate's DIY garage is a little different... We show a simple hack to be able to use 4 ramps to get the G37 up quickly:

 

This is awesome, I love working on the car but really hate getting it up in the air because of how long it takes. I gotta try this.

 

I"ll be honest this guy knows a lot but I would not be comfortable getting under a vehicle that the supporting system (the ramp) has been cut on and parts removed. Maybe you could drive on a board first to get all the ramp underneath unmodified.

 

I'd want a board on each side bridging the front and rear ramps together anyway.
Ever try to climb a ramp, only to have it spit out from under the front of the tire?
so yeah, drive onto the long board/front ramp assembly first.
then clip the rear ramps onto the boards.
the board should also allow you NOT to have to cut the rear ramps down?IDK, just spitballin' here