You can learn a lot from somebody's video bio: if you're not going to gel with the actor or a crew.
Don't sell credits; don't sell walk-on roles... If people want to back you, they'll back you. But if you have to entice people will walk-on roles and crazy credits, you're undermining yourself.
The cars haven't advanced that much since we were kids. When you boil it down, it's still a gas combustion engine.