A look inside the Nissan shows the charred aftermath.
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It happened just after 14-year-old Jonah Mauri's mom stepped out of the vehicle on the way to a 4th of July party in Dayton.
Police say the teen lit a coil of fireworks fuse, sending the minivan up in flames.
A passerby put the blaze out with a fire extinguisher.
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The teen suffered burns on 25-percent of his body.
His mom says he is in good spirits.
She hopes the incident can be a lesson in fireworks safety for others.