Complex sentence: They are picked up by Mellie in a stolen sports car, and taken to the Speedway, while Sam and Fish sabotage the electrical grid with an IED destroying the main generator, forcing all vendors to switch to cash.
Split into simpler sentences: They are picked up by Mellie in a stolen sports car, and taken to the Speedway. Meanwhile Sam and Fish sabotage the electrical grid with an explosive destroying the main generator, forcing all vendors to switch to cash.