I've moved to a new state that requires a front plate to be on the car.

All I see in the front bumper is a big blob. No place to attach anything unless I just drill into it. What's the story? Is it all plastic? Do I just drill a couple of self tapping wall screws into it?

 

My RX330 just has self tapping screws right into the bumper. I do think I'll get a silicone mounting plate thing, like these:

 

Correct, bumper is an ABS mold, if you want to put holes in it, use self tappers. Otherwise as timB52 suggested, tow hook plate mounts are non-invasive but obviously not centered, hang onto the color matched cap, those are not cheap to replace.

 

Friend in CA just bought a 2020 Tesla model S, no front plate mount. I drove for 20 years without a front plate in CA and was pulled over a few times for other things, they never mentioned it.
Cops in CA really don't care. If you want a backup excuse just carry the plate with you in the door storage or glovebox. If a cop mentions it in a stop then show him the plate and tell him you intend to figure a way to mount it but there is no mount so you never got around to it. They really don't care and if they did it'd be a fix-it ticket which carries no penalties.
Since there's no mount then it's a valid excuse not to have one.

 

Perhaps you can get a license plate mount like this one

 

RX330


RX400h
https://www.lexuspartsnow.com/parts/...114-48090.html

 

So there is no metal behind a screw can run into?

Years ago I got dinged when parking at LAX - they patrol the lots just looking for violations as it's easy cash. Back then I do not believe there was such a thing as a fix-it ticket.

In any event I think having the plate in the car for now is going to be enough. Contemplating selling it soon anyway!

 

There are 2 dimples on the bumper, that's where you drill the holes. You just use metal screws to hold the Plates, I think. (In GA we are only using the RR plates).