In my prior post, I gave you a summary overview about driving with a disability. Today, I'd like to expand on that.
Again, primary driving controls are gas, brake and steering while secondary controls include everything else. The systems I will be using come from 2 companies; Drive Master and EMC. As you might imagine, there are not many companies around that manufacture products like this. It is a specialty, and I'm sure the liability exposure, hence the cost of insurance, is considerable. That applies to the dealer network as well. Installing these systems requires specialized expertise, and generally the dealers offer driver training and evaluations as well as installation. The company I'm working with locally has been doing this for well over 20 years, and they are indeed experts.

I'll be using mechanical horizontal steering which connects to the steering column. It can be adjusted on all planes. Drive Master also retrofits steering boxes and rack and pinions for reduced and zero effort steering. Among other innovative products, they offer backup steering systems as well.
I'll also be using the gas/brake system from EMC. Their entire EMC system is called AEVIT (Advanced Electronic Vehicle Interface Technology). They also offer secondary interface controls and "drive by wire" steering. Their website is extremely informative. This page gives a very nice overview of the AEVIT driving system.
Another very innovative company in this arena is MPD, Mobility Products and Design. The hand control in my current van is an MPD product. It is amazingly reliable, even after 11 years of use.
Learning to drive with these devices is a little challenging and will require over 10 hours of training. Mr. Keller has an older trainer van and is in the process of outfitting a new one. You can imagine the expenses involved in such a specialty, hence the reason for the high cost at the consumer level. This is indeed a very specialized business, and the companies and dealers involved are indeed quite innovative.
I'm enjoyed doing this research. I hope you enjoy it as well.