I'm a newbie too, so I think I can see thsi from Scotts level.
The answer is YES Scott. With an event, on page 2 there's set move route, there's then a drop down menu where you choose whether the event effects the player (you) or another event.
By default it's on you/player, so then from the options on the left choose change graphic! Select the bike!
Then if you want to revert back, next time you make an event have choose graphic, cloud on foot