Is he your back-up transportation? I am sure I have ridden in cars smaller than him...
In the "Anywhere he wants to" Department -
How do you contain him? All I have is footlong RedFoot and she can knock over just about anything that gets in her way. With as petite and svelte as Titan is, how much of your house's foundation has been rearranged?
What do you do if you have bad weather coming in? Does he come when you whistle? Do you wave dandelions at him and toss them through the door once he's got a good head of steam up?