This is nothing new. Outriggers on bikes of various designs have be around for more than 100 years for this.As MGB mentioned rail road tracks may be a great way out of populated areas would be a safer option than roads.
This guy lives near a stretch of abandoned track and rides his mountain bike on them.
In a "Get Out of Dodge" situation, you won't care if the track is active or not. And it has the advantage of less exposure to others, and is almost silent.
View: https://www.youtube.com/watch?v=NZXf3SVcoao&t=3s