It seems they were trying to use this trip to get a YouTube channel, website and Instagram accounts off the ground, get some sponsors, etc. and they may have realized there was a lot of behind the scenes work involved in entertaining people on YouTube with 10 minute videos. It's harder than it looks. I also get a sense the money ran out faster than they had anticipated. Did I read correctly earlier that Gabby had purchased the van? Judging on that one scene in the YouTube video Brian appeared* to have some basic car repair knowledge but we don't know that for sure without the full context. I mean there could have been some kind of outrageously expensive repair along the way that sapped a bunch of their funds as well.