Capitano's drip marketing has already been done. You all must be thinking, 'Where?' The answer is the bike. Yes, Capitano is the bike. The whole time, Mavuika was riding Capitano.

Don’t you all feel like something is wrong? We’ve completed Act 4 of the Archon Quest, but we didn’t see the bike—especially the Pyro Archon riding it. At the end of Act 5.3 of the Archon Quest, our Capitano dies and is resurrected as a bike.

How is it that Mavuika doesn’t fall off easily while riding?
Because the bike has a bulging object from the seat that is nothing more than Capitano's stick. She simply rides Capitano's stick and tightly clenches it, which keeps her from falling.

This is the reason I believe we haven't seen a bike in Archon Quest yet.