Clears for the road

• Restores windshield visibility
• Clears, in a way
• Clears mist from, as windows
• Improves visibility
• Clears of condensation
• Clears the windshield, say
• Melts the mist
• Improves windshield visibility
• Gets the mist off

Wiktionary Word definitions in Wiktionary
vb. (en-third-person singular of: defog )