It doesn't resemble a crApe myrtle to me. I think it would be difficult to positively ID a tree without knowing where in the world it is, what the leaves look like, what the branching pattern is, etc. Any chance of getting decent pictures and letting us know where, in general, these trees are?

I can't tell if they are Crepe Myrtles or not from those photos. Can you photograph the leaves up close?

Can't tell by the foliage but the shape says callery (Bradford) pear to me. Agree with Brandon, looks nothing like a crape myrtle.

Sorry I should have been more descriptive. To me the truck is what resembles a CM. These tree in are Arlington TX, I am currently about a hour from them but next time I'm in the area I plan on taking better pictures.