add bassliner and ride sharing

docs/travel.md

@@ -184,8 +184,9 @@ Take a look at the full [timetable](media/2023-07-12-OVG-Fahrplan Chaos Comp. Cl
 
 ### from a city in germany
 
-We plan to offer a group bus from major german (and maybe one or two cities in Switzerland and Austria) cities.
-Details are still being worked out.
+Travel to Camp together with all your friends, arrive directly in front of the entrance and avoid having to carry your stuff from the parking lot, protect the environment by emitting less CO2? How about a bus tour?
+
+[Right now we only offer tours from Berlin and Hamburg](https://bassliner.org/en/tours/chaos-communication-camp-2023), but we would love to have a few more bus users. All you need are at least 40 people for one tour and multi-city routes are also viable! So please use the [wiki](https://events.ccc.de/camp/2023/hub/camp23/en/info/bassliner/) to find like-minded people or organize a fun tour with you and your neighbouring hackerspace. Depending on your starting point and the number of people the price will be between 50 and 70 € one way. Please [contact bassliner](mailto:buero@bassliner.org) until 31 July if you found enough people.
 
 ## via taxi
 
@@ -210,6 +211,10 @@ Please do **not** arrive with an empty tank of gas and rely on a gas station clo
 Those will be overwellmed and run out of gas, leaving you stranded. This was tested 2019 and we would prefere to spare you from it.
 Please fill up your tank **before** you get close to the location, at best while still on the highway.
 
+### ride sharing
+
+Sharing is caring: If you have a spare seat, please offer your ride in the [wiki](https://events.ccc.de/camp/2023/hub/camp23/en/info/ride-sharing/). There is also a section for searching a ride. 
+
 ### Unloading
 
 * Driving a car onto the camp site is only possible outside of the official event period.