Books for a Vehicle-Obsessed Toddler

I'm still marveling over the fact of how very BOY my little boy is... Trucks and buses and construction equipment is the coolest thing ever, according to Leo. Me...not so much... but I'm willing to support the obsession because at least he isn't into guns.
So we've started establishing a small library of vehicle-based titles to entertain and delight our little guy.
Here's a few of our favorites:

Little Blue Truck by Alice Schertle
and
Little Blue Truck Leads the Way by Alice Schertle

Goodnight, Goodnight Construction Site by Sherri Duskey Rinker

Good Morning Digger by Anne Rockwell

Where's My Truck? by Karen Beaumont

One criteria for a good children's book is the ability for adults to read it over and over again without going completely insane. All of these books fit that criteria for us, so I'm glad to get my little guy interested in reading without having to put up with tepid prose.