Um... It appears to be the Jetson's aircar. The Germans somehow went not only into the future, but must have watched Avengers: Endgame and engineered their own multiverse transporter, travelling even further into the cartoon future to secure all that advanced Spacely Sprocket technology.
Hmmm... Was that guy Dieter from the SNL skit "Sprockets" actually a time travelling WW II German spy? A coincidence? I think not.
OK I'm done. I'm gonna work on a model kit now.