The high-speed is exhilarating! It has nice game feel, the plane is pretty responsive to key commands and crashing feels fair/deserved. I think a health bar would be helpful. I don't quite see the connection to the theme but it was fun to play.
Actually, the red block on the ships butt is the healthbar. It's like Dead Space :D (this isn't communicated very well 'cuz it's a jam-game. But basically; 3 hits and your gone ;) )