I've worked on every 'job' on a top fuel car over the years. So I know a lot about the cars themselves. When I last worked as a 'crew member', I was typically called a 'Car Chief'. The last few years I sort of filled that same position with a few teams, but more in a consulting role. Basically I oversaw the work done by the crew members, and stepped in when needed, all at the direction of the team owner, crew chief, and in some cases an assistant crew chief, in that order. In a 'consulting' role, I was my own boss of my own consulting business, with the tax advantages of being a 'business'. Basically it was a better deal for me, and the owner(s) had a bit less liability.