Marcos Castro, 24, was killed after a road-rage confrontation on Interstate 35 in Oklahoma City on Friday, October 5, 2007. Witnesses say his car and another nearly collided during a lane change, prompting an argument that ended when both vehicles pulled onto an off-ramp and stopped.

According to those witnesses, four men got out of the other vehicle and ran toward Castro’s car. One of the men was reported to be armed with a knife and stabbed Castro several times while he sat in the driver’s seat. The group then fled. Police described the suspects as four Hispanic men and sought a newer model black Chevrolet or GMC SUV, possibly a Tahoe, Yukon, or Denali, with tinted windows and 20-inch chrome rims.

What information can readers share about that stretch of I-35 or anyone who might have seen the vehicle that day?