Breaking into somebody’s pickup truck — whether on calle 4 Oriente in Cholula, or anywhere else on the planet — is probably best done when:
Sombrero tip to Laura Martinez)
The Mexfiles has never expected to turn a profit, but personal funds only go so far. Miscellaneous expenses (telephone, internet connection, subscriptions, spyware, hardware repair, etc.) run about 600 pesos (35 US$) a month, and donations are gratefully accepted. Please note that your donations are in Mexican Pesos (18 pesos to the US Dollar as of February 2019). A 25 US$ donation is 450 pesos.
The background of Mexican anti-clericalism and the "atheist" general who led the Catholic counter-revolution of the 1920s 128 pp., Editorial Mazatlán, 2012.
An oral history of the World War II experiences of Gilberto Bosques (1894 – 1997), Mexico 's Consul General in Marseilles, France, who saved tens of thousands from the Nazis. 36 pp. Editorial Mazatlán, 2007 $35 MXP (click the image)
mexfiles.net 
Maybe he forgot his keys inside?
I have been seen trying to open my car with a wire after I locked my purse with my keys inside…a bit embarrassing, but not illegal!