Please develop my idea!

While in a hurry to get some place today, I was struck with what I think to be a fabulous idea. The saying "necessity is the mother of invention" is just not a trite phrase, as it turns out. Apart from telling you that I was driving, I will spare you the whole back story about how my idea came about, as I suspect you will figure it out yourself. If you can't figure it out by yourself, you probably don't have the brain pan to develop the idea anyways.

My great idea is to develop a dash-mounted device that would activate an inert femto-cell cellular station every time the left turn signal is engaged. The one problem with this device is that the biggest tools of the driving world don't use turn signals, so it would be ineffective where it is needed the most. In any case, let me say that I would be perfectly happy if it was standard equipment on cars.