They dont pay engineers for that any more. My brother in law who works on cars always reminds me that those things we call quick disconnects are not that at all...they are quick connects to make assembly line work faster and as mistake free as they can, some of those things are almost impossible...
Find an old push mower that still runs. Set wheels for tallest cutting height. push down on the handle and get those front wheels way off the ground. Push it slowly into your over growth. Mow for a while and rake up the cuttings. Keep moving on area by area. Go back over it until you can mow...