Loud rattling noise.

2011 TRD Sport. Has developed a loud rattle. We're 90 miles from a mechanic.
Drive it?
Noise starts about 40 seconds into the video clip....

https://photos.app.goo.gl/YuvhJsNhdqguukrb8

 

A bit of google research suggests a cracked fly wheel.

 

Is the belt running smoothly or jumping around? It may be the tensioner pulley or idler pulleys are toast

 

Belt appears to be running smoothly.

Idler pulleys were replaced 50,000 miles ago. (That was an entirely different wheezing noise that our former mechanic dismissed multiple times as nothing to worry about. Abour 50 miles north of Kayenta, AZ, in 98 degree heat with a violin and a cello in the truck, it became something to worry about.)

 

We're at 215,000 miles

 

My 2008 2WD Tacoma DCSB V6 automatic has a similar but not as pronounced noise.

https://youtu.be/zKt6UK0mShE

 

Drive it. Call tow truck once it breaks down, you'll save miles/cost of towing.

 

Turned out to be the compressor clutch. Rattle and knocking gone. As well as a chunk of cash.