After a trek through more of the Mojave Desert, you reach Victorville one of the fastest-growing cities in the United States. Originally called Lane's Crossing when it was settled in 1858, the village was renamed "Victor" after a local railroad manager around 1895.
Trivia: The first two drafts for the movie Citizen Kane were written in Victorville.
A popular stop from this point on is Emma Jean's Holland Burger Café. Since Emma Jean opened it in 1947, it's been serving up café and diner food like you'd expect on Route 66. Try the Brian Burger (named after the son of Emma Jean, who does the cooking), the Trucker's Sandwich, or the biscuits and sausage gravy.
Route 66 goes under Interstate 15 and, as D Street, enters Old Town Victorville, where you'll find the California Route 66 Museum. The museum was established in 1995. Prior to that, it was a restaurant called the Red Rooster Café, which is where the movie The Jazz Singer was filmed – the Neil Diamond version.
On the south end of Victorville, Route 66 hooks up with I-15 for the ride toward the Cajon Pass, the access point to the entire L.A. basin.