I've seen this done on an ERA replica about two years ago.
I don't recall the owner's name, but it was a red ERA with a personalized Missourri tag on it that read "WRKD4IT"
I saw the car in the paddock at Heartland Park during an SCCA weekend. I believe the owner races a formula atlantic car.
Anyways, I took a peek inside of it & noticed "no shifter".
Then I saw that it had a momo steering wheel with two paddles on it. I spoke to one of his crew members who told me that it had about a $25,000 transaxle in the car. I never did meet the owner, since I was busy with my own racecar that weekend.