Deputies said the victim, a 59-year-old man, was shot around 6 a.m.
While driving northbound on a stretch of I-95 between Hobe Sound and Palm City.
The shooter has been charged with aggravated battery.
He is being held on a $15,000 bond.
New technology helps track students during emergency situations
After the Parkland school shooting in 2018, the state commission recommended that law enforcement and school districts communicate..
WPTV News | West Palm Beach