Server errors

[gohighvoltage]

I am getting thousands of these errors, I know it is googlebots, but have no idea what they are looking for...

[Tue Jan 10 20:08:00 2012] [error] [client 66.249.66.118] invalid request-URI
[Tue Jan 10 20:08:02 2012] [error] [client 66.249.66.118] invalid request-URI
[Tue Jan 10 20:08:02 2012] [error] [client 66.249.66.118] invalid request-URI
[Tue Jan 10 20:08:03 2012] [error] [client 66.249.71.200] invalid request-URI
[Tue Jan 10 20:08:03 2012] [error] [client 66.249.66.118] invalid request-URI
[Tue Jan 10 20:08:05 2012] [error] [client 66.249.71.200] invalid request-URI
[Tue Jan 10 20:08:05 2012] [error] [client 66.249.66.118] invalid request-URI
[Tue Jan 10 20:08:07 2012] [error] [client 66.249.66.118] invalid request-URI
[Tue Jan 10 20:08:07 2012] [error] [client 66.249.66.118] invalid request-URI
[Tue Jan 10 20:08:09 2012] [error] [client 66.249.71.200] invalid request-URI
[Tue Jan 10 20:08:09 2012] [error] [client 66.249.66.118] invalid request-URI
[Tue Jan 10 20:08:11 2012] [error] [client 66.249.66.118] invalid request-URI
[Tue Jan 10 20:08:11 2012] [error] [client 66.249.71.200] invalid request-URI
[Tue Jan 10 20:08:12 2012] [error] [client 66.249.66.118] invalid request-URI
[Tue Jan 10 20:08:12 2012] [error] [client 66.249.66.118] invalid request-URI