.. Getting rid of the mechanic

Have you talked with him about fixing the Tour bus? He should give you his business card.

Now, could you drive him mad with the AVR spam?

His business card has the address. Now you should just buy "services" for him.

Go talk to the Online Service Broker at the station in the Blade HQ. Show him the business card.

He is on phone now. Go to the carage.

Is he distracted?

Use the keybox, pick up the office key and shut him into the room with the key.