Nikola said Wednesday it had filed for Chapter 11 bankruptcy protection and would pursue a sale of all or most of its assets, after grappling with rapid cash burn and struggling to raise funds in the past few quarters.

It’s been a wild ride for the ambitious maker of large trucks, including a big-dollar deal with GM and a high-profile fraud conviction for its founder. But now, it’s bankrupt.

After struggling to raise cash and undergoing several leadership changes, the electric semi truck maker Nikola filed for bankruptcy Wednesday.