The auto of the Mexican consul general in Miami was bombed early today in a driveway of his home.

The consul general, Rafael Reyes Spindola, his wife and four children, were sleeping in the one-story house at 912 SW 74^th Avenue, and escaped injury in the 3 a.m. blast although one son, Rafael Jr., 12, was in a bedroom next to the driveway.

The house suffered no damage. The consul's personal auto, and 1966 Cadillac sedan, was one of two cars parked in the driveway and was closest to the house.

The blast caused the right rear tire to blow out and dislodged the disc ornamental hubcap. Sergeant Neil Lett of the Metro Bomb Squad said the explosive used was not the C4 type used in the bombing of two Miami establishments involved in the shipping of food and medicine parcels to Cuba via Mexico and another explosion at a body shop.

Sgt. Robert Hoeischer of Metro Criminal intelligence said it appeared the explosive charge was of a type similar to a device known as an "artillery simulator" used in troop training and sometimes used in battle movies. Such devices are about six inches long.

The charge had been placed under the auto near the right rear side. Young Rafael Reyes Spindola felt the force of the blast and he and the other members of the family ran outside.

"I was awakened by the sound of screeching tires and then the noise of an engine speeding up as a car drove away," Spindola said.

The explosion came a few minutes later.

"It was a cowardly thing to do. If Cubans are responsible, they should be ashamed. The Cubans in Miami should be grateful to Mexico for enabling them to send food and medicine to their loved ones in Cuba," said the Consul.

A cargo plane used in the shipment of food, medicine, and clothing parcels to Mexico, where they are re-routed to Havana, was damaged by explosives at Miami International Airport January 20.