Dumbness from Drivers

I have these questions to ask..

-How hard is it to use a turn signal?

-How hard is it to use emergency blinkers when you're double parked?

-If you can only go 40mph on the freeway, you shouldn't be on the freeway.

-If you're turning to the right...you're supposed to pull all the way over to the right.

-What's so fashionable about tailgating in traffic? I don't need a hood ornament thank you.