Once you have charged the scooter (with the quick charger from MacGuffin's), drive down into the atrium, and left into the west wing, then back. When you see the cart drive past down the left escalator, go to the top of the escalator and wait there for it to come around again. (For some reason, it does not always come back right away.)
You charge the scooter by going to MacGuffin's and get the new quick charger. Your character will say "Well, I'm on official business, after all." And then you go back to the manager's office and charge the scooter with the quick charger.
Sadly, the charger does not survive this use.
You use the "scooter" (Segway Transporter) it at the start of the island, to get the job.
When the crook steals a security cart, Gus suggests that you get the scooter in the Mall office. The code word is FROST. Go to MacGuffin's to get the quick charge device for it. When you leave the office, go to The West Wing, then return to start the cart chase. Go to the top of the escalator (left side) in the atrium and the cart should drive by (it's actually a dummy driver). This sequence can be difficult to start for some reason, as the cart is driving places it cannot go.
the quickcharger you took the job to watch for. Its in the appliance store with the steel umbrellas where you found the phone
you get the quick charger
The scooter has a battery, but it needs charging. Go to MacGuffin's and get one of the new devices that is supposed to quickly charge things.
The password to the scooter is "frost."
The word is "frost."
The code for the scooter is "FROST."
You only have the scooter when you are chasing the security cart around the mall. You use the password (frost) to get it from the Manager's Office, and charge it with the charger device from MacGuffin's. After you chase down the cart, Eddie the snake has the scooter (and may still have it when you leave).
After you get the scooter, charge it, and chase the cart into the fountain, head back to PrintFax and click on the first copy machine. Press "menu" and select the last scan.
When you are chasing the robber in his stolen security cart, Gus suggests you get the scooter that is in the office. Use the password (frost) to get it. Go to MacGuffin's to get one of the quick chargers to charge the scooter's battery. Leave the office with the scooter, and go to the escalator on the far side of the atrium.
You don't. You have bigger problems. Besides, he might bring it back.
The combination on the safe is 6723. The password code to open the scooter cabinet is "frost."
No one knows, and you do not have to find him. Eddie will come back to help out in the end.
Go to MacGuffin's to get one of the newfangled quick chargers.