Where there's a will, there's a way...
Yesterday afternoon came back from a Home Depot trip in the wife's Jeep...it's 102 degrees outside at 1 pm.
Solution...I just pulled her Jeep into the Air Conditioned shop instead of the house garage. 2 hours later the Jeep was a solid 80 degrees just like the rest of the shop...so into the house garage it went.
AC seems to barely run in the shop and it's even temperatures from one end to the other, within 1.5-2 degrees from the front to back, floor to 16' tall ceiling. Very happy with it's performance so far.