Flying- Hybrid Jet/ Electric Car- an old idea made new again.

Now this would be the most awesome car ever. as ridiculous as it sounds. I was thinking if someone could reduce down the size of an F-22 Engines to car size - true it would be a miracle but not impossible then have it convert transformer style from Ford Mustang into Ford Mustang Pegasus Jet or call it what you wish. Would this be too expensive to build probably? I believe as most believe the cost of building a ducted fan or jet could theoretically eventually happen. Just don't let the chinese do it first. or make it a single engine jet with the ability to hover like the F-35 Lighting II, AV8B Harrier,