I think any attempt to home brew and operate a self driving car on public roads is Irresponsible in the Extreme..
Wrong Headed, Ignorant and Just Plain Stupid. F'ing stupid doesn't begin to cover my contempt for the idea.
The fact that you are proposing this with the first gen Leaf.. shows how little you understand about the cars
and I am quite willing to gratuitiously extrapolate that to the whole concept.
Car makers with billion dollar budgets are struggling to work the bugs out of this..
Trying to do this alone is a classic example of The Confidence born of Not Knowing What You Don't Know.
For which there is psychological model that won a Nobel Prize.
Classic Darwin's List material.. with collateral damage on a grand and terrifying scale awaits.
This reminds me of nothing more than the old air force sargent I knew who was a meat ball shade tree mechanic( at best)
who arrives at my airport talking about building a Benson Gyro Copter.
Despite being surrounded by a dozen extremely skilled pilots, mechanics and AC builders,
the guy could not be persuaded that his dream machine was a piece of crap without much engineering
integrity, and even less flying capability Despite a fatality record that is public and extensive.
I hope this tread dies right here.
Before some person does.

2016 SV purchased 11/2/16 With Subsidies From Sonoma Clean Power, North Sonoma Air Pollution Control District, Evergreen, and State of California, and $15,000 in discounts from Jim Bone Nissan Santa Rosa California.

Color Me GRATEFUL Long Time Coming !