The car was seized from a garage in Eastleigh as it emerged the eight missing terror suspects may have slipped to Garissa or Dadaab where they are hiding.
Investigations show the plan to attack churches and a presidential event was well planned several weeks ago.
This according to police forced president Kibaki’s security details to postpone his trip to Mombasa by a day when he opened the local ASK show.
The team has since learnt that the terrorists planned to travel to Nyeri on Thursday night ahead of Kibaki’s visit to the area to open the local show.
Their plans were however thwarted after the red Peugeot car that has been seized broke down.
The suspects in custody have told police they planned to among others blow up four churches and shoot at the congregations in the city other than targeting the presidential event.
The suicide bombers had been dispatched by Somalia’s Al-Shabaab terrorists and were to blow themselves up in the targeted sites and target two senior politicians.
All the improvised explosives were designed to be detonated by remote control, using mobile telephone handsets.
Detectives handling the case were shocked to find out that the phones’ SIM cards had been registered under the names of prominent politicians.
Officers said they could have been used as code names, but would not rule out that the politicians could have been targeted for assassination.
The politicians’ security has since been enhanced.