Rob nails it on both accounts: “Since Doc Brown’s DeLorean/time machine only travels through time and not space, I have to say I find this video completely inaccurate. On the other hand, it would have been saved if Doc had told Marty ‘It’s your kids! We’ve got to do something about your kids! They’re making out with each other!'”
Somehow this video came out in April and I’m just seeing it for the first time. Damn, I feel like a slacker.