I have 3 of those exact same stickers on the bumper of my car! Car’s even the same color!  
Had a split second freakout thinking DB had found me. lol

@The Twelfth Doctor Whoof  
The speed camera thing is more of a problem in the UK but American cities are seeing more and more cameras popping up, so you might get them whether you like it or not I’m afraid :-/  
Luckily you can avoid getting unwarranted tickets by plastering the rear of your car mlp stickers as shown above :P

@Goldenpwny  
Of those reasons, #2 is the most important with #1 a close second. #3 may or may not be an issue depending upon where one lives - speed/redlight cameras are banned in my area, at least for now (there are a few places where people have organised to get rid of them).

Drivers typically request their plates blurred for a variety of reasons, most commonly:  
1) plate number = name, address, phone number, etc… this makes it extremely easy to silently steal a car as you can be there as the driver exits the vehicle.  
2) Identity theft  
3) A fake plate can be made for a car of similar make/model/color so that the car with the fake plate can speed through speed/red light cameras and the tickets get sent to the real owner.
 
There are other reasons, but in general it’s a really good practice to blur the plates.

@ThatRandomGuy42  
I would say they do it to protect themselves more so than the people that are being recorded while the TV show is being broadcasted. The world is full of assholes looking to make an easy buck off a harmless act such as revealing the license plate on the back of your car.

@OneAmongOthers  
Makes sense I guess.

@ThatRandomGuy42  
Because that’s a televised TV show. Don’t want to get sued by some asshole that feels his privacy is being infringed on.

YEAH!!!

@OneAmongOthers  
Not really. On Top Gear they always blur out civilan number plates. They must do it for some reason.

it’s not like it’s hard to get some random persons plate # Hell I can walk outside and get one in 1 min.

@ThatRandomGuy42  
As if anyone would so anything with that plate number anyway… I think you’re being a little paranoid about it honestly.

@Background Pony  
No booster rockets? No military-grade weapon systems? Where’s your imagination?

When i got a car, i gonna put stickers like that on it

@ThatRandomGuy42  
Yeah, I guess it might have been a good idea for them to blur out the plate or something.

@VladimirMacHolzraum  
Still, I admire his quick thinking.  
Probably not a good idea to take a photo of someone’s car without them knowing. Especially of the license plate.  
I could be wrong though.

@ThatRandomGuy42  
Well they are stopped at a red light.

…Did the photographer just whip out his phone on whim whilst driving his car?

Ponies, Minecraft and… Google Chrome?
 
Pimpin’.