- Mr Cumulus: With a weapon like this, no one tells me what I can or cannot do! And now that I've got my own Mach 5, we don't need two in the world!
- Speed Racer: If that were an ordinary car I could catch up to it, but I can't when it's another Mach 5!
- Dr Nightcall: Yes you can, Speed!
- Speed Racer: Huh?
- Dr Nightcall: Listen to me. I built the car exactly like your Mach 5, but you're forgetting one thing: the bomb is heavy and it will slow down the car enough for you to get a chance to catch up to it. But you've got to hurry! Every second counts! You must save the people in the city from being wiped out!
- Speed Racer: Thank you, Doctor. I'll try.
- Trixie: Go, Speed!