It happened on the B3081 near Verwood - he had to be cut free by firefighters.
Car Fires In Hampshire
Police are appealing for information after a series of car fires in Hedge End and Bitterne.
Officers investigating four car fires are appealing for information from possible witnesses.
All the fires have been deliberately set in the early hours of the morning, and all started at the front end of the vehicles.
The incident details are as follows:
On September 4 at 4.57am police were called after a Nissan Navar was set on fire in Adams Close, Hedge End
On September 6 at 3.01am police were called after a Ford Ghia was set on fire in Havendale, Hedge End
On September 6 at 4.43am police were called after a Fiat Punto was set on fire in Glenfield Avenue, Bitterne
On September 6 at 5.24am police were called after a Vauxhall Astra was set fire to in Terrier Close, Hedge End
Detective Inspector Dave Jackson said:
"We are certain these fires were all started deliberately, and due to a number of factors, it is possible they are all linked. We would like to hear from anyone who has heard or seen anything suspicious in any of these areas, and particularly in the early hours of the morning. We have extra patrols in place and have been carrying out extensive enquiries, but any small detail you may know could prove vital in identifying who is responsible."
Anyone with any information should contact CID at Eastleigh police station on 101 or call Crimestoppers, the charity, anonymously on 0800 555 111.
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