What's the date of that picture they sent you?
Id want pictures of MY bike being built, not stock photos of 4 years ago.
Also, in general.
This whole waterproof concept.....
Waterproof and Pressure Washer shout NOT be in the same sentence EVER !!
Plenty of stuff is waterproof, but will get destroyed by a pressure washer.
There are several orders of magnitude difference between getting rained on, or even a garden hose sprayed on something .vs. a 3000 psi targeted stream of water.
Solar panels are waterproof, they have to be, but a pressure washer will ruin them, it tears the seals out, then they are no longer waterproof. Having water blown at 400 FPS up under a seat to drip into a charger, the bike would never see that under ANY normal conditions.
also, water proof / water resistant.
it may handle being out in the rain overnight or even for a few days, but not designed to be at the bottom of a retention pond for a few hours until the tow truck hauls it out.
just saying
aaron