I think that I should be getting a Nobel Prize

I think that I deserve one. I have done something that the entire scientific community has failed to do.
I have invented invisibility.
I buggered if I know how I have done it but I have. It seems that while I have been driving my car around I have inadvertently left the invisibility device that I have invented turned on.
I also have a personal device secreted about my person for when I am walking around the streets, or in the supermarket.
I must have left them turned on as people seem to have an inability to see me,  whether I am walking or in the car.
I AM 6’8” tall. I weigh 18½ stone. But at times I am invisible.
The only problem is that I haven’t invented the off switch for it yet. And because the device is invisible I can’t find it to take the batteries out of it. My only hope is that I didn’t connect the the solar panel that recharges it or I may never become visible again! I will always have other cars trying to be in the bit of road that I occupy. I will always have people walking into me in the street.
Still, on the plus side I can spend my life hiding in the ladies changing rooms and generally being a pervert without fear of getting caught.

Obviously the above frame is empty to you, the reader, and I am wasting my time putting it there.

Regards
Giant68