Thanks for all the comments. Truth is my husband almost always drives, and I am in the passenger seat, so there is no risk anyway. I usually take my iPad to take photos at an event.
However, back to the key question! It doesn't seem that anyone here has experience of the Equi-Vue. Using your...
I have been reviewing options on the internet this morning. I am impressed by Equi-Vue from Trailor Vision, but only know what I read. You can view on your phone or iPad. It's £179.99. Can anybody who uses it comment?