Motorcar-caused illhealth, & their cost to the Public Purse?

Here's a missive I sent to the ABC Radio National's "Health Report" on Monday, 3 March, 2008 9:41 AM

It's another idea that popped into the cranial-space about health costs incurred by the Public Purse, caused by everything involving the production, manufacture, sales, use, maintenance, and eventual disposal of TADARGH! motor cars!!

The Health Report's response to my slim few words (scribed on my cellphone's email facility), is first:

Re: Health costs?
From:
"RN Health Report"
Add sender to Contacts
To:
"ABC Web-Mail Form"
Dear Max Earth,

thank you for your email. I'll pass it on to Norman Swan.

regards,
Brigitte Seega
producer
Health Report

ABC Web-Mail Form wrote:
Below is the result of your feedback form. It was submitted by
(maxadiff@yahoo.com.au) on Saturday, March 01, 2008 at 09:47:55>

name: Max Earth

Comments:

Hypothetical factorings:

If a nation had no motor vehicles, but for research focus, no cars, how much less would the Community & personal COST be, for surgery, medicine, medical, hospice, aftercare & therapy?

Question includes: illness & injuries in allied workplaces: production plants, mechanics, INFRASTRUCTURE.

Also, with car pollution not present, just clean air alone, what health & health cost savings would there be?

Related Question: What studies exist on long-term health effects of factory/plant work? Same for mechanics, tyre fitters, panel beaters, spray painters? Road bitumen/concrete construction/maintenance workers?

Good grounds for a scientific study on these questions, methinks...