To set him on fire. Duh.

Unlawfully, poorly-secured gasoline

The cop started chasing him because he had no tag on his motorcycle.

He tried to outrun the cop, going up to 100mph and blowing through red lights before crashing.

He'd been carrying a gallon container of gas in the backpack, which is what ignited from the taser spark.

He had no insurance and a suspended license.

Was this guy just in desperate need of transportation?

He's in the United States in Arkansas, so yes, desperately in need of transportation. Should he have caught a subway train? Maybe there's some high speed rail in his area.

He should have been born somewhere else if he didn't wanna get flame roasted