The DX5e doesn't have much in the way of adjustments and both this and the DX6i need mechanical modification to make them work properly with a car.
I have a DX6i that I got when messing with helis and planned to use it but got an Etronix 2nd hand for my son for a great price and apart from being a bit small for my hands (great for his) it seems to be a great value piece of kit.
I wish Spektrum would make a car/boat version of the DX6i.
Don't fly much really so I might sell my heli stuff and get a car for myself