I hereby present my first newgrf
File comment: Some hoverbuses in action :)
Monbourne Transport, 2061-03-05.png [ 51.04 KiB | Viewed 36077 times ]
It is a futuristic hovering bus, available from 2030 on. Its graphics are based on eGrvts (with permission from Zephyris), and you can use it together with (e)Grvts, but also as a standalone (just for fun) or with any other vehicle sets. See below  for use with different sets.
The newGrf should basically work with TTDPatch, but I didn't test it and it may behave different/strangely because TTDPatch implemented the use of some realistic acceleration variables that are ignored in OpenTTD and thus I did not test them.
The newGrf is tested and works with OpenTTD, but needs a version of at least r14869, else it will not be as fast as it is supposed to.
Due to its unbelievable powerful magick(TM) hovering drive, the hover bus can reach top speeds of 318 mph (511 km/h).
However, since the costs of powering this unimaginable technology are very high, and (at least in OpenTTD) the vehicle is slowed down by curves and inclines badly, the vehicle is only really profitable on bigger distances, preferable with a special road that goes only straight. (The hover bus needs ca. 120 tiles of straight road to reach its max speed!)
For other scenarios, you should use other types of buses available in the (e)Grvts set: for long distances, but not a dedicated straight road, coaches are great; for shorter distances, normal or doubledecker or articulated buses give best results.
 Usage with other sets.
In OpenTTD, you can enable the advanced setting "Enable multiple NewGRF engine sets", and you will have no problems.
Alternatively you can follow the instructions below and set its vehicle ID to any ID from 0 to 254. For example, if you're using eGrvts, IDs 249 to 254 are still free.
For TTDPatch, you can set the first grf parameter to any valid road vehicle ID in decimal numbers (00 to 87). The hover bus will use the vehicle ID you specified. By default, the hover bus uses the vehicle ID 57 (hex) == 87 (dec). Like this you can avoid IDs already used by another vehicle set.
The sprites used in this grf are based on sprites from the "Extended Generic Road Vehicle and Tram Set" (eGrvts)
by Zephyris (Richard Wheeler).
Following the conditions of the license of eGrvts,
this newGrf (Hover Bus) is released under the latest version of the Attribution-Non-Commercial-Share Alike Creative Commons
Use and distribute freely for non-commercial purposes crediting me, Roujin (Manuel Wolf) and Zephyris (Richard Wheeler), as authors with a link to this thread (viewtopic.php?f=36&t=41363
) and Zephyris' eGrvts thread (viewtopic.php?f=26&t=33415
). Modifications and adaptations can be made so long as they credit me and Zephyris as original authors, are for non-commercial purposes and are released under the Attribution-Non-Commercial-Share Alike Creative Commons license.