I'd like to see them do it like this:
Each carries 2 spare batteries which are hooked up to solar panels on the bike. As they ride, the sun recharges the spare batteries via the solar panels. When a battery dies, they swap it out for a recharged one and ride on.
Now the fun part comes at night when there is no sun to recharge, or when they need tires and pull into a village that doesn't have a bike shop. So they hike to the closest place with wifi and order tires only to find out the closest they can be delivered is 20 miles away. So they ride villager burros through the mountains passes to get them. In the mountains they are attacked by drug lords who take everything.
Then when they get to the US border they have no ID, speak with a funny accent, and get thrown in ICE cages and detained for 8 months.
See how I made the show better?