For those that use Google calendars you can now subscribe to an ASN calendar that will keep you up to date with all of the major car events of the year.
To subscribe to it log into your own calendar then click 'Calendar settings'
Under the Calendars tab click 'Browse interesting calendars'
Under more tools click 'Add a friend's calendar'
And enter the gmail address asn.vcds and you're done!
To check it works the first event of the year is GTI spring Festival, April 3rd.
To suggest an event please just post it in this thread.