The Prius will display all those vertical bars if you send over a
telephone number with any of these three characters:
(
)
-

So, you'll have to re-write your address book/contact list on your
phone to just have the string of numbers, without the pretty ()-
characters.  Then it'll transfer over to the Prius correctly.

(There is a pause character that'll transfer properly, but I don't
recall what that character is.)

Also note that the Prius will only take the first number entry for a
name.  So, be careful if that first entry is someone's fax number!  If
you have several numbers for one person, you'll want to separate them
out into something like:
John Doe H
John Doe W
John Doe C
Instead of a home/work/cell number for your friend John Doe all in one
name entry.