DB Multiverse

In universe 18, Bulma told over the phone that another time machine was found. But here...

Where are you calling from? I thought Gohan would be home and tried calling him, no one answered!!!

Say, is my grown-up son from the future there?

Yeah, he’s here.

Ok. You should get back to Dr Gero’s laboratory! Take any laptops, floppy disks, plans you can find, bring them to me!

We did that in my time. There is nothing but rubble.

But it was years after, wasn’t it? Maybe you’ll have more luck now. It’s worth a shot.