Police have condemned the driving, saying it put innocent lives at risk.
The Transport Agency Waka Kotahi is looking further into 18 companies
"We have a group of thugs that are saying to the law 'go to hell'."
A handful of viewers admitted that they'd pulled the same maneuver before.
Provisional data indicates 57 riders died on roads last year.
Here's what we know.
They were 76-year-old Lisale Foaese and 41-year-old George Foaese.
"I just saw the car headlights, just two headlights coming towards me."
"A lot of the accidents we're seeing - they're absolutely preventable."