The 28-year-old man was riding a Suzuki Tricyle on Station Road, Irchester, at about 6.40am (Tuesday, 9 February) when it collided with a Nissan X-Trail that was travelling in the opposite direction.
The rider was taken to University Hospital Coventry by land ambulance.
Anyone with information, or who witnessed the incident is asked to call the Drivewatch Hotline on 0800 174615.