Turbo Lights on '80 Firebird Trans Am

Hi All,
Bit of a tricky question.
I am building cars from my youth and and I have a fairly special one:
http://www.78ta.com/pacecar.php (inherited from my father)

I have Lexan bodies and models in various scales 1/60 (Lexan) , 1/43 (Artin), 1/32 (Bachmann) and 1/25 (MPC).

On the hood/ bonnet there are "turbo boost" lights that indicate how "hard" the turbo is working Normal, Medium, High:

http://cdn3.volusion.com/klmat.yytxn/v/v….jpg?1425797380

Here you can see how the work: https://www.youtube.com/watch?v=Djnw2BoD3p8

The question is could I somehow recreate such behavior in a slot car?

Ideally they would light up as you go full speed and go out as you slow down, sort of a reverse brake light....

I reckon only the 1/25 would have enough space ...

All cars have been converted for 12-18Volt .

Any thoughts or am I crazy?

Thanks in advance!