Possible Clues:

• People are moved by its high wire performance
• Old transporter's role subtly changed
• Transportation option in Philadelphia and Seattle
• Playing role subtly, one moves the masses
• Advance so far up, welcoming spin in vehicle
• Store bully managed to take customers for a ride
• It's electrically driven for the messages on public transport
• You may be moved by this role subtly cast
• Extra taken up inside perhaps giant American vehicle
• It's electrically driven for the messages on public transportation