red ones do go faster

code/modules/research/xenobiology/xenobiology.dm

@@ -354,19 +354,31 @@
 	icon_state = "bottle3"
 	origin_tech = "biotech=5"
 
-/obj/item/slimepotion/speed/afterattack(obj/item/C, mob/user, proximity_flag)
+/obj/item/slimepotion/speed/afterattack(obj/O, mob/user, proximity_flag)
 	if(!proximity_flag)
 		return
 	..()
-	if(!istype(C))
-		to_chat(user, "<span class='warning'>The potion can only be used on items!</span>")
+	if(!istype(O))
+		to_chat(user, "<span class='warning'>The potion can only be used on items or vehicles!</span>")
 		return
-	if(C.slowdown <= 0)
-		to_chat(user, "<span class='warning'>[C] can't be made any faster!</span>")
-		return..()
-	to_chat(user, "<span class='notice'>You slather the red gunk over [C], making it faster.</span>")
-	C.color = "#FF0000"
-	C.slowdown = 0
+	if(isitem(O))
+		var/obj/item/I = O
+		if(I.slowdown <= 0)
+			to_chat(user, "<span class='warning'>[I] can't be made any faster!</span>")
+			return ..()
+		I.slowdown = 0
+
+	if(istype(O, /obj/vehicle))
+		var/obj/vehicle/V = O
+		var/vehicle_speed_mod = config.run_speed
+		if(V.vehicle_move_delay <= vehicle_speed_mod)
+			to_chat(user, "<span class='warning'>[V] can't be made any faster!</span>")
+			return ..()
+		V.vehicle_move_delay = vehicle_speed_mod
+
+	to_chat(user, "<span class='notice'>You slather the red gunk over [O], making it faster.</span>")
+	O.remove_atom_colour(WASHABLE_COLOUR_PRIORITY)
+	O.add_atom_colour("#FF0000", FIXED_COLOUR_PRIORITY)
 	qdel(src)
 
 /obj/item/slimepotion/speed/MouseDrop(obj/over_object)

code/modules/vehicle/atv.dm

@@ -6,7 +6,7 @@
 	key_type = /obj/item/key
 	generic_pixel_x = 0
 	generic_pixel_y = 4
-	vehicle_move_delay = 1.5
+	vehicle_move_delay = 1
 	var/static/mutable_appearance/atvcover
 
 /obj/vehicle/atv/Initialize(mapload)

code/modules/vehicle/secway.dm

@@ -5,7 +5,7 @@
 	key_type = /obj/item/key/security
 	generic_pixel_x = 0
 	generic_pixel_y = 4
-	vehicle_move_delay = 1.5
+	vehicle_move_delay = 1
 
 
 /obj/item/key/security