Tennis Tutor non spin machine at 85mph how does it stay in the court

I have a friend that is looking for a machine, it can't be the bigger plus as that doesn't fit in their trunk so we were thinking of the tennis tutor machine with remote and oscil. but I'm left wondering if you crank it to 85mph how does the ball stay in with no spin?
It is probably 85mph right when it leaves machine but by the time it bounces is a lot slower. I set mine to about 75% speed.
i had a plus model, and the top spin needs to be cranked up a bit to keep the ball in. if you are considering hitting balls anywhere near that speed, you definitely want the top spin unless you can have the machine launch balls from the parking lot.