I Have An Idea

"I… I can't hold them off for much longer. Are you guys done yet?!" the bald man urged anxiously. His tone implied that if Zhang Heng and Mei Nan didn't do something now, he was a goner for sure. 

Mei Nan wasn't convinced, though. "Ignore him. He's far from doomed – we still have about seven minutes. Even though they said we could build anything, it's useless to build weapons right now. The Evil Scientist has taken complete control of the city, and his minions are everywhere. More bionics attack us if the battle continues, which is why we need to leave here as soon as possible," she said.

"A vehicle?"

"That's right. We need to build a vehicle."

"Can't we just use the existing vehicles?"

"I thought about it, but unfortunately, have you seen any reliable means of transport on your way here?"