Supposedly, both this attacker and the Texas shooter were members of the same Mexican prison gang active in the Texas penal system- Tango Blast.
https://twitter.com/GraduatedBen/status/1655396155545485312?cxt=HHwWgICw3YyCk_ktAAAA
This appears to be Hispanic on Hispanic violence. Among established Hispanics in the Southwest there is a bitter resentment against Biden’s open border’s policy. they realize and are experiencing a real decline in their standard of living and security due to the influx. Combine that resentment with alcohol or a mixed drug cocktails especially methamphetamines it easy to see how this driver, possibly with a criminal background, impulsively decided to plow into these people.
He has multiple Rio Grande Valley Tango Blast gang tattoos. From bottom lower left RGV for Rio Grande Valley, above the R Valluco, above the V is the 956 area code. above either side of the RGV block letters are the two palm trees.