As to your statement, "If terrorism was the intent, the bomb would have been inside a casino not in the parking garage and set to explode only when the employee picked it up," perhaps it was a "trial balloon" i.e. the 1993 bombing of the World Trade Center (in the parking garage.)
The blast shortly after 4 a.m. Monday left a 12-inch (30-centimeter) hole in the man's car on the second floor of the garage behind the Luxor hotel-casino, authorities said. A woman who left the hotel-casino with the man was standing nearby but escaped injury.
The man, who had just finished his shift at a hot dog stand inside the casino, was considered to be the target, though police don't know why.
"This appears to have been a small device that was constructed in such a way to target a single individual victim," Deputy Police Chief Ted Moody said.
Police did not immediately identify the dead man or the uninjured woman.