Excessive speeding is a criminal offense in California, and it can result in a reckless driving charge if the driver is found to be driving with willful or wanton disregard for the safety of others. However, speeding alone cannot be a felony offense in California. It can only lead to felony charges if the incident led to someone else suffering serious injuries and the driver is also charged with either reckless driving or street racing. In California, a serious injury is defined as a serious impairment of physical condition, which includes loss of consciousness, a concussion, a bone fracture, the protracted loss or impairment of the function of any bodily member or organ, a wound that requires extensive suturing, and more. Traveling over 100mph is most likely hitting the speed limit for a felony in California, but officers can arrest drivers for reckless driving if they drive in willful or wanton disregard for the safety of persons or property. Reckless driving is a misdemeanor charge in California, punishable by a maximum 90 days in jail and/or $1,000 fine.