Surveillance video obtained exclusively by NBC Connecticut shows the frightening moment a minivan slammed into a West Hartford home Tuesday morning, causing part of the second floor to collapse into a heap of rubble.

The video shows a minivan jump a curb and smash into 240- 242 South Quaker Lane just before 7 a.m. The force of impact brought down several porches, burying the hood of the car under a pile of splintered wood.

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"All of a sudden, I heard a big crash and I looked over this way at the house and both porches, all of a sudden, came down," said Darrel Strickling, who watched the crash while getting coffee at a gas station across the street.

Police said the woman who was driving the minivan hit the corner of 244 South Quaker Lane, then hit the three-family home at 240-242 South Quaker Lane.

Emergency crews at the scene said people were in the house when the minivan hit, but they were not injured and some didn't even realize what had happened.

Police believe a medical condition might have contributed to the crash and the woman who was driving the minivan was rushed to Saint Francis Hospital in Hartford to be checked out. Strickling said she was able to get out of the car and appeared to be OK.

"She said she just blacked out. She was coming home from a workout and the last thing she knows she was coming from that light. She doesn’t remember anything else," he explained.

The property manager responded to secure the building's front doors and make sure no one could accidentally walk outside and get hurt.

Officials from the building department were also called in to assess the damage, but neither building was condemned.

The road was closed for around half an hour. Police officers and firefighters have since left the scene.