I saw the weight of the Kuat racks and quickly scratched them from my list. What I bought was a 1Up Super Double rack that weighs 47 lbs but has platforms to support the weight of the bike and so better with carbon frame bikes. I use the Hollywood Rack Valet to move the rack from the car to my garage and it is a great design that works with both 1-1/4" and 2" racks and have four lockable wheels.
Other rack manufacturers to consider are Swagman (Canada manufacturer) and Hollywood (USA). At the high end there are racks from Thule and Yakima. The Thule has a short ramp and it has its own wheels to move it to and from the vehicle. Strongly recommend the reviews by owners of these racks to learn the pros and cons of each before making the purchase. The more popular models are likely to be out of stock.