According to Official Guinness Records,
In 1998 a group of surfers (USA) successfully stacked a total of 282 surfboards on top of a car and drove 30.4 m (100 ft ) near Santa Barbara, California, USA.
The car used was a Humvee. Source: Bill Sharp, Editor of Surf News and a compiler to the surfing encyclopedia.
For a complete list of 1998 records, please visit 1998 Guinness Records in United States.