Hi,    We're hoping to drive to Harrow today, I was wondering if anyone knows if the route is safe and reasonably fast to drive?  It's mostly on the A5, but I'm a little worried about the traffic crawling along there and taking forever.    Here's our planned route: http://www.google.com/maps?f=q&source=s_q&hl=en&geocode=FZo4EQMdNMz-_ykb7kT5kAN2SDFLHdPIPBZCIA%3BFbkHEwMdQOj6_yn5ByWgWBF2SDHZW-KZiU_XJA&q=se22+8ea+to+harrow&sll=51.500152,-0.126236&sspn=0.38983,1.234589&ie=UTF8&saddr=se22+8ea&daddr=harrow&ll=51.518144,-0.180588&spn=0.194838,0.617294&z=11    I tried checking the BBC travel news site, but couldn't make much sense of it.    Thanks in advance    Will