If you've ever allowed anyone from Texas to chose their own radio callsign, there's always a theme. One time, in band camp, I had a 30 user radio network and half the folks on it hailed from Texas. When the cellphone system was down and people used the radios, it went something like this:
'Lone Star, this is Cowboy, have you seen Yellow Rose, over?'
'Cowboy; Lone Star, Yellow Rose is with Astros and Oiler, over.'
'Copy Lone Star, tell them I'll meet them all at Rangers house when I drop off Longhorn's truck, out.'
Anyway, since Rafael is a vehicle guy from Texas, I'll go with Alamo.