re: neighbor waking up my 5 month old twin with remote cars

I wouldn't mind the dude mowing his lawn, or weedeating it or tweaking his outboard motor.

or a crawfish boil.

One thing that the OP hasn't mentioned is how long this goes on, and how often.

If it's once a week or so, no big deal.

If it's every damn night, the guy needs to practice his hobby in a place that it doesn't annoy his neighbors. It's pretty simple.