Dennis Anderson is a professional driver known for driving which monster truck considered to be one of the most influential and iconic monster trucks of all time?
Grave Digger
Title: Dennis Anderson
Passage: Dennis Anderson (born October 24, 1960) is an American professional monster truck driver.  He is the creator, team owner, and former driver of "Grave Digger" on the USHRA Monster Jam circuit.  Anderson is from Kill Devil Hills, North Carolina, where he currently resides.
Title: Monster Nationals
Passage: Monster Nationals is the name of the monster truck series run by Image Promotions.  The series primarily consists of monster truck racing and freestyle in indoor arenas.  The events typically have only two parallel sets of cars on an empty concrete floor as a race track.  The event format is similar to those of the USHRA Thunder Nationals series, due to owner George Eisenhart being the former director of that series.  Trucks currently running in the series include Big Dawg, Lil' Miss Dangerous, Nitemare, Raminator, and Rammunition.  In previous years, Bigfoot also competed.  Unlike its USHRA counterpart, the Monster Nationals series runs indoor arena shows during the winter season and outdoor fairground shows during the summer.  Some monster trucks that are new to the Monster Nationals include Tailgator (Doug Noelke's newest creation), Holman's Beast and teammate truck Ironman, and more.  Returning trucks to the circuit include War Wagon, formerly owned by Jeff Cook who sold it to Andy Hoffman, and Samson, who ran the outdoor series in 2003 and 2007.  The Monster Nationals, along with intense monster truck racing, also features some extreme stunts and performances such as a jet-powered Jeep, a jet-powered recliner, FMX Freestyle, BMX Freestyle, and car-eating transformers.
Title: Grave Digger (truck)
Passage: Grave Digger is a monster truck racing team in the Feld Entertainment Monster Jam series.  There are nine Grave Diggers being driven by different drivers to allow them to make appearances at more events, but their flagship driver is creator Dennis Anderson.  Dennis Anderson is the head of the Grave Digger department team.  He is in charge of the training of the younger drivers and the fleet of trucks.  Grave Digger is considered to be one of the most influential and iconic monster trucks of all time.
Grave Digger (truck) Dennis Anderson