Using Selenium to get time and distance information from Google Maps

Hi,
I am trying to make a destination origin matrix, one with distance and one with time, for a linear programming model which needs to have every possible distance and time for a combination of a hundred or so locations. I have downloaded Selenium and my plan is to use google maps to get all of the data, and then I will loop through my locations list to collect all of the data I need. I am having trouble with a few lines of code, basically just pulling the distance and time information from the google maps webpage and putting it into a string. Anyway, any help with the code would be appreciated. The specific line that won't work is the one that assigns the text associated with the xpath to the string.

Sub Destination_Origin_Matrix()
Dim driver As New WebDriver
Dim str As String
Dim origin As String
Dim destination As String
   driver.Start "chrome", "http://www.google.com/"                                                     'Launch the browser
   driver.Open "https://www.google.com/maps?m&ll=37.6,-95.665&z=4&output=classic&dg=ntvo"                 'Open to google maps
   driver.Click "id=d_launch"                                                                                          'Click on directions button
   driver.Type "id=d_d", origin                                                                                        'Type the text present in the string origin
   driver.Type "id=d_daddr", destination                                                                         'Type the text present in the string destination
   driver.Click "id=d_launch"                                                                                                         'Click on directions button again to get out of textbox
   driver.Click "id=d_sub"                                                                                           'Click on the "Get Directions" button to get directions
   
str = driver.findElementsByXPath("//div[@class='altroute-rcol altroute-info']/span[1]").Text                      'should put distance info into str string
   
driver.stop          'Stop the browser
 End Sub