A 26-year-old driver is facing a lengthy jail term after crashing his van - filled with more than $200 million of the drug ice - into police cars parked out the front of a Sydney cop shop.

NSW police say it is one of the "easiest" drugs busts ever made, and it would be fair to say the accused had a "very, very bad day".

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Just before 10.30am on Monday, the Toyota HiAce allegedly hit the parked police cars on Ethel Street in front of Eastwood Police Station.

One of the police vehicles sustained significant damage, but no one was injured in the incident that was captured on CCTV.

Officers inside the station say they heard a loud crash but, by the time they went to investigate, the driver had gone.

Van spotted

About an hour later, a senior police officer spotted the van travelling south toward Ryde Bridge on Church St and stopped the vehicle.

The driver's suspicious behaviour prompted the officer to search the vehicle, Detective Inspector Glen Baker told reporters on Tuesday.

Inside the van was 13 boxes, each containing 21, one kilo bags of methylamphetamine.

The accident was captured on CCTV. Credit: 7NEWS

In total, police seized 273kg of ice, which has an estimated street value of more than $200 million.

"It's an exceptional set of circumstances that brings us here today," Baker told reporters.

"Crashing into a police vehicle with that amount of drugs on board is somewhat unheard of and is an exceptional set of circumstances.

"With a haul of this size, this has now initiated quite a significant investigation."

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The man behind the wheel of the van and was arrested at the scene before being taken to Ryde Police Station, where he was charged with large commercial drug supply, negligent driving, and not giving particulars to police.

Chevron Right Icon 'Crashing into a police vehicle with that amount of drugs on board is somewhat unheard of.'

He didn't apply for bail and it was formally refused when the matter was heard in court.

Baker says it would be fair to say that this man has had a "very, very bad day".

"This would be one of the easiest drugs busts that NSW Police has every made - incredible, absolutely incredible," said Baker.