What started as a single monster truck has evolved into a brand of its own. There are multiple Grave Diggers, multiple ...

In the clip posted on Instagram, the 40-year-old rapper-turned-country star introduced his son to Grave Digger, a popular monster truck that Jelly Roll recalled admiring when he was younger.

Following is a transcript of the video. Narrator: This is Monster Jam, the monster truck spectacular that electrifies audiences in stadiums and arenas around the world. These drivers put their ...