Hardened Shells

My brother is working on a new fuel for his rocket car. He's brilliant, he really is. So brilliant that... I think that new fuel he's designing is strong enough to eat right through the car's chassis!

I want to reinforce its fuel tanks before that happens.

The tortoises out on the flats have very hard shells. I want to use them to create new tanks for our rocket car. Tanks that can hold my brother's new fuel.

You look responsible enough. Will you get me those shells?

My brother is making progress with his new fuel design, and that has me worried. I need to start work on a tortoise shell fuel tank as soon as possible!

<name>, do you have those shells yet?

You got them! Thanks, <name>!

Wow, these shells are harder than I thought! Heh, when I work with them I'll probably bend a whole box full of tools!